Synthesizing one-part geopolymers from rice husk ash

One-part geopolymers offer advantages over conventional geopolymers with regard to handling and storage of feedstocks. However, they often suffer from a low degree of reaction, a high amount of crystalline byproducts, and consequently low strength. In this study, one-part geopolymers were produced f...

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Bibliographic Details
Published in:Construction & building materials 2016-10, Vol.124, p.961-966
Main Authors: Sturm, P., Gluth, G.J.G., Brouwers, H.J.H., Kühne, H.-C.
Format: Article
Language:English
Subjects:
Alkali-activation
Analysis
Bio-based materials
Geopolymers
Mechanical properties
One-part formulation
Polymers
Rice husk ash
Zeolites
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Summary:One-part geopolymers offer advantages over conventional geopolymers with regard to handling and storage of feedstocks. However, they often suffer from a low degree of reaction, a high amount of crystalline byproducts, and consequently low strength. In this study, one-part geopolymers were produced from rice husk ash (RHA) and sodium aluminate, and investigated by XRD, ATR-FTIR, SEM and compressive strength testing. The compressive strength of the material was ∼30MPa, i.e. significantly higher than for comparable one-part geopolymers. This is attributed to an almost complete reaction of the RHA and the absence of crystalline byproducts (zeolites) in the hardened geopolymer.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2016.08.017